Home / 11,783.91-16,261.17-6,477.71

Finding the Fourth Proportional to 11,783.91, 16,261.17 and 6,477.71

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Solution

The fourth proportional to 11,783.91, 16,261.17 and 6,477.71 is: 8,938.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,783.91 : 16,261.17 = 6,477.71 : x
  2. Step 2: Convert to fraction form
    11,783.91/16,261.17 = 6,477.71/x
  3. Step 3: Cross multiply
    11,783.91x = 16,261.17 × 6,477.71
  4. Step 4: Simplify right side
    11,783.91x = 105,335,062.21
  5. Step 5: Solve for x
    x = 105,335,062.21/11,783.91
  6. Step 6: Final answer
    x = 8,938.89

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.